CN221707368U - Ultrasonic transmission detection device for rotary rubber core of blowout preventer - Google Patents

Abstract

The utility model belongs to the field of blowout preventer rubber core detection, and in particular relates to a blowout preventer rotary rubber core ultrasonic transmission detection device which comprises a U-shaped handheld mechanism, a rotary mechanism, an ultrasonic emission probe, an ultrasonic receiving probe, a double-layer probe clamp expansion plate for fixing the ultrasonic emission probe and the ultrasonic receiving probe, a control device and a display device; the rotating mechanism is movably connected with the U-shaped handheld mechanism; the ultrasonic transmitting probe and the ultrasonic receiving probe are connected with the control device, and the control device is connected with the display device. The nondestructive testing device can be used for carrying out nondestructive testing on internal defects of the rotary rubber cores of the blowout preventers with different thicknesses, and prolonging the service life of the rotary rubber cores of the blowout preventers in the subsequent use process.

Description

Ultrasonic transmission detection device for rotating rubber core of blowout preventer

Technical Field

The utility model belongs to the field of blowout preventer rubber core detection, and in particular relates to an ultrasonic transmission detection device for a blowout preventer rotating rubber core.

Background Art

Rubber products are used as the main seals in wellbore operations. At present, the failure causes and failure mechanisms of sealant cores are still under exploration and research at home and abroad. Different rubber core materials and structural shapes vary greatly.

In recent years, as drilling operations have gradually moved towards deep and ultra-deep layers, most rubber products have encountered problems such as low service life. For example, the service life of the rubber core of the rotary blowout preventer is further reduced under special working conditions such as oil-based drilling fluid and unknown fluid in the formation. Defect detection of the rubber core before use is beneficial to extending the service life during subsequent use.

Due to the particularity of rubber materials, when using conventional ultrasonic testing, the measurement results are easily affected by problems such as signal attenuation. Conventional ultrasonic testing measures by receiving ultrasonic echoes, which has great limitations on the thickness of the rubber core and cannot detect a rubber core with a thickness of 10mm.

Summary of the invention

The utility model aims to provide an ultrasonic transmission detection device for a blowout preventer rotating rubber core, which can perform nondestructive detection on internal defects of blowout preventer rotating rubber cores with different thicknesses, and realize nondestructive flaw detection of internal defects of blowout preventer rotating rubber cores with thickness greater than 30 mm.

To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a blowout preventer rotating rubber core ultrasonic transmission detection device, comprising a U-shaped handheld mechanism, a rotating mechanism, an ultrasonic transmitting probe, an ultrasonic receiving probe, a double-layer probe clamp telescopic plate for fixing the ultrasonic transmitting probe and the ultrasonic receiving probe, a control device, and a display device; the rotating mechanism and the U-shaped handheld mechanism are movably connected; the ultrasonic transmitting probe and the ultrasonic receiving probe are both connected to the control device, and the control device is connected to the display device.

Furthermore, the upper end of the rotating mechanism and the U-shaped hand-held mechanism are rotatably connected by bolts, and a nut cooperating with the bolt is also provided on the U-shaped hand-held mechanism; a reset torsion spring is provided between the lower end of the rotating mechanism and the end of the U-shaped hand-held mechanism.

Furthermore, four rollers are fixedly arranged on the telescopic plate of the double-layer probe fixture to assist the ultrasonic transmitting probe and the ultrasonic receiving probe in sliding on the rotating rubber core of the blowout preventer.

Furthermore, the double-layer probe clamp telescopic plate includes a first double-layer plate and a second double-layer plate; the upper plate of the first double-layer plate is connected to the upper plate of the second double-layer plate via springs, and the lower plate of the first double-layer plate is connected to the lower plate of the second double-layer plate via springs; two fixed columns are respectively arranged in the middle of the upper plate and the lower plate of the first double-layer plate and the second double-layer plate for positioning.

Furthermore, V-shaped clamps are provided on opposite sides of the upper plate and the lower plate of the first double-layer plate and the second double-layer plate, and anti-slip strips are provided on the inner sides of the V-shaped clamps.

Furthermore, the ultrasonic transmitting probe is in a convex arc shape, and the ultrasonic receiving probe is in a concave arc shape that matches the ultrasonic transmitting probe.

Furthermore, the four rollers on the telescopic plate of the double-layer probe fixture are universal wheels.

Compared with the prior art, the beneficial effects of the utility model are:

1. Provide an ultrasonic transmission detection device for a blowout preventer rotating rubber core, which can perform non-destructive defect detection on the blowout preventer rotating rubber core and is beneficial to extend the service life of the subsequent use process.

2. The integrity of signal reception is ensured by aligning the ultrasonic transmitting probe and the ultrasonic receiving probe on the inner cone surface and the outer cone surface of the rubber core.

3. By setting the rotating mechanism and U-shaped hand-held mechanism, different angles can be adjusted according to the change of the thickness of the rotating rubber core of the blowout preventer.

4. By setting up a double-layer probe fixture telescopic plate and the universal wheel thereon, the ultrasonic probe can be easily replaced and the angle can be adaptively adjusted according to the surface shape of the rubber core, ensuring that the ultrasonic probe always fits well with the surface of the rubber core to be tested, and the penetration rate of the sound waves emitted by the probe is high.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present utility model, rather than limiting the present utility model.

Figure 1 is a schematic diagram of the overall structure of the utility model;

FIG2 is a schematic diagram of the connection between the U-shaped hand-held mechanism and the rotating mechanism of the utility model;

FIG3 is a schematic diagram of the structure of the telescopic plate of the double-layer probe fixture of the utility model;

FIG. 4 is a schematic diagram of the structure of the ultrasonic transmitting probe and the ultrasonic receiving probe of the utility model.

In the figure: 1-U-shaped hand-held mechanism; 2-rotating mechanism; 4-ultrasonic receiving probe; 5-ultrasonic transmitting probe; 6-double-layer probe clamp telescopic plate; 7-reset torsion spring; 8-bolt; 9-nut 10-roller; 11-first double-layer plate; 12-second double-layer plate; 13-spring; 14-fixing column; 15-V-shaped clamp; 16-anti-slip strip.

DETAILED DESCRIPTION

The utility model is further described below by means of specific embodiments:

Referring to Figures 1-4, an ultrasonic transmission detection device for a rotating rubber core of a blowout preventer includes a U-shaped handheld mechanism, a rotating mechanism, an ultrasonic transmitting probe, an ultrasonic receiving probe, a double-layer probe clamp telescopic plate for fixing the ultrasonic transmitting probe and the ultrasonic receiving probe, a control device, and a display device; the rotating mechanism and the U-shaped handheld mechanism are movably connected; the ultrasonic transmitting probe and the ultrasonic receiving probe are both connected to the control device, and the control device is connected to the display device.

The upper end of the rotating mechanism and the U-shaped hand-held mechanism are rotatably connected by bolts, and a nut matching the bolt is also arranged on the U-shaped hand-held mechanism; a reset torsion spring is arranged between the lower end of the rotating mechanism and the end of the U-shaped hand-held mechanism.

Four rollers are fixedly arranged on the telescopic plate of the double-layer probe fixture to assist the ultrasonic transmitting probe and the ultrasonic receiving probe in sliding on the rotating rubber core of the blowout preventer.

The double-layer probe clamp telescopic plate includes a first double-layer plate and a second double-layer plate; the upper plate of the first double-layer plate is connected to the upper plate of the second double-layer plate via springs, and the lower plate of the first double-layer plate is connected to the lower plate of the second double-layer plate via springs; two fixing columns are respectively arranged in the middle of the upper plate and the lower plate of the first double-layer plate and the second double-layer plate for positioning.

The upper and lower plates of the first double-layer plate and the second double-layer plate are provided with V-shaped clamps on opposite sides, and anti-slip strips are provided on the inner side of the V-shaped clamps. The ultrasonic transmitting probe is a convex arc, and the ultrasonic receiving probe is a concave arc that matches the ultrasonic transmitting probe. The four rollers on the telescopic plate of the double-layer probe fixture are universal wheels.

When in use, first clean the surface of the rotating rubber core of the blowout preventer to ensure that the surface of the rotating rubber core of the blowout preventer to be tested is as smooth as possible, and the surface roughness Ra≤25um. Apply coupling agent on the planned detection path. When the ultrasonic wave is transmitted with the help of the coupling agent, its transmittance can be increased. Then, according to the different thicknesses of the rotating rubber core of the blowout preventer, the probe frequency is reasonably set. Before the start of the test, a standard test block is used to calibrate the performance of the ultrasonic system. After calibration, ultrasonic testing can be carried out. The roller is placed on the guide rail, and the two ultrasonic probes are placed on the inner and outer cones of the rotating rubber core of the blowout preventer respectively. The rotating rubber core of the blowout preventer is clamped to ensure that the ultrasonic transmitting probe and the ultrasonic receiving probe are aligned. The curved ultrasonic dual probe is fitted with the surface of the rotating rubber core of the blowout preventer, and the probe rotates and scans the surface of the rotating rubber core of the blowout preventer. Finally, the detected defect signal is compared with the signal generated by the known reflector, and the signal is transmitted to the display device for presentation.

Claims (7)

1. A blowout preventer rotating rubber core ultrasonic transmission detection device, characterized in that it comprises a U-shaped handheld mechanism (1), a rotating mechanism (2), an ultrasonic transmitting probe (5), an ultrasonic receiving probe (4), a double-layer probe clamp telescopic plate (6) for fixing the ultrasonic transmitting probe (5) and the ultrasonic receiving probe (4), a control device, and a display device; the rotating mechanism (2) and the U-shaped handheld mechanism (1) are movably connected; the ultrasonic transmitting probe (5) and the ultrasonic receiving probe (4) are both connected to the control device, and the control device is connected to the display device. 2. According to claim 1, a blowout preventer rotating rubber core ultrasonic transmission detection device is characterized in that: the upper end of the rotating mechanism (2) and the U-shaped hand-held mechanism (1) are rotatably connected by a bolt (8), and a nut (9) matching the bolt (8) is also provided on the U-shaped hand-held mechanism (1); a reset torsion spring (7) is provided between the lower end of the rotating mechanism (2) and the end of the U-shaped hand-held mechanism (1). 3. According to claim 2, a blowout preventer rotating rubber core ultrasonic transmission detection device is characterized in that: four rollers (10) are fixedly provided on the double-layer probe clamp telescopic plate (6) to assist the ultrasonic transmitting probe (5) and the ultrasonic receiving probe (4) to slide on the blowout preventer rotating rubber core. 4. A blowout preventer rotating rubber core ultrasonic transmission detection device according to claim 3, characterized in that: the double-layer probe clamp telescopic plate (6) comprises a first double-layer plate (11) and a second double-layer plate (12); the upper plate of the first double-layer plate (11) and the upper plate of the second double-layer plate (12) are correspondingly connected through a spring (13), and the lower plate of the first double-layer plate (11) and the lower plate of the second double-layer plate (12) are correspondingly connected through a spring (13); two fixing columns (14) are respectively arranged in the middle of the upper plate and the lower plate of the first double-layer plate (11) and the second double-layer plate (12) for positioning. 5. The ultrasonic transmission detection device for a rotating rubber core of a blowout preventer according to claim 4, characterized in that: the upper and lower sides of the first double-layer plate (11) and the second double-layer plate (12) are provided with V-shaped clamps (15) on the opposite sides, and the inner side of the V-shaped clamps (15) is provided with anti-slip strips (16). 6. A blowout preventer rotating rubber core ultrasonic transmission detection device according to any one of claims 1 to 5, characterized in that: the ultrasonic transmitting probe (5) is a convex arc, and the ultrasonic receiving probe (4) is a concave arc that matches the ultrasonic transmitting probe (5). 7. The ultrasonic transmission detection device for a rotating rubber core of a blowout preventer according to claim 3, characterized in that the four rollers (10) on the telescopic plate (6) of the double-layer probe clamp are universal wheels.